Architecture de communication pour les réseaux d'instrumentation sans fil

Architecture de Communication pour les Applications Multimédia Interactives dans les Réseaux Sans Fil

Characterizing the topology of an urban wireless sensor network for road traffic management Caractérisation de la topologie d’un réseau urbain de capteurs sans fil pour la gestion de la circulation routière

Dans un futur proche, les réseaux sans fil seront l’une des technologies clés pour la gestion de la circulation routière dans les villes intelligentes. Les véhicules et systèmes routiers devraient être reliés, par exemple à travers l’extension IEEE 802.11p. En parallèle, nous pouvons nous attendre à ce que les feux de circulation et les signaux routiers aient leur place dans cette architecture,...

Wireless Broadcast with Network Coding: Energy Efficiency, Optimality and Coding Gain in Lossless Wireless Networks

We consider broadcasting in multi-hop wireless networks, in which one source transmits information to all the nodes in the networks. We focus on energy efficiency, or minimizing the total number of transmissions. Our main result is the proof that, from the energy-efficiency perspective, network coding may essentially operate in an optimal way in the core of the network for uniform wireless netw...

Online Estimation of Battery Lifetime for Wireless Sensors Network

Battery is a major hardware component of wireless sensor networks. Most of them have no power supply and are generally deployed for a long time. Researches have been done on battery physical model and their adaptation for sensors. We present an implementation on a real sensor operating system and how architectural constraints have been assumed. Experiments have been made in order to test the im...

Universe Detectors for Sybil Defense in Ad Hoc Wireless Networks

The Sybil attack in unknown port networks such as wireless is not considered tractable. A wireless node is not capable of independently differentiating the universe of real nodes from the universe of arbitrary non-existent fictitious nodes created by the attacker. Similar to failure detectors, we propose to use universe detectors to help nodes determine which universe is real. In this paper, we...